The 'Baby' hitmaker, 20, is seen semi-naked in the snap as he holds the camera by his crotch to show his lower stomach.
He simply captioned the picture, "Night".
The snap was posted just hours after Bieber shared a picture of himself lying down with two women who have their arms and legs wrapped around him.
One of the females in the shot appears to be Chantel Jeffries, the model who made headlines earlier this year when she was photographed sitting next to Bieber in a Lamborghini shortly before he was arrested on suspicion of driving under the influence (Dui) in Florida.